Backing-strip for refrigerator-car-door packing.



I W. H.- MINER. BACKING STRIP FOR REFRIGERATOR OAR DOOR PACKING.

APPLIOATION FILED MAR. 10, 1911.

' Patented May 23, 1911.

/-//5 ATTORNEYS WILLIAM H. MINER, OF CHICAGO, ILLINOIS.

BACKING-STRIP FOR REFRIGERAToR-CAR DoOR PACKING;

. Specification of Letters Patent.

Patented May 23, 1911.

Application filed March 10, 1911. Serial No. 613,541.

'12) all whom it may con-camp I Be it known that I, \VILLraii H. Mixer, a citizen of the United States, residing in Chicago, in the county of-Cook and State of Illinois, have invented a new and useful Improvement in Backing-Strips for Refrigerator-Car-Door Packing, of which the following is a specification.

My invention relates to improvements in packing backing strips for refrigerator car doors.

My invention consists'in a packing backing strip formed of .a strip of sheet metal bent into loop form in cross section, with flat inner and outer faces and curved end'walls, and having coiled springs secured thereto at intervals by staples which are inserted through holes formed at the meeting edges of the backing strip, and which thus connect the meeting edges of the backing strip as well as secure the coiled springs thereto.

In the acompanying drawing forming a part of this specification, Figure 1 is a horizontal, sectional perspective view of a device embodying my invention. tail, horizontal section. Fig. 3 is a detail rear elevation of the backing strip. Fig; 4 is an end view looking from the line 4% of Fig. 3. Fig. 5 is a detail end view of one of the coiled springs. Fig. 6 is a detail elevation of the spring. Fig. 7 is a detail view of the staple.

In the drawing, 1 represents a portion of the frame of a refrigerator car door ha ving a longitudinal channel 2 to receive the backing strip for the packing, and circular recesses 3 to receive the coiled springs of the packing strip at intervals throughout its length.

4 is the yielding packing secured to the member 1 and extending across the channel or recess 52 therein and secured thereto by wire brads or nails 53 in connection with the flexible facing strip 6. The yielding packing 4 and its 'lacing strip (3 are'prcssed yieldingly outward and backed upinforder to produce a tight joint. at the edge face of the door with the door jamb or door frame by means of-a. sheet metal backing strip 7 curved into loop Form in cross section, and having a flat outer face 8, a Hat inner face 9 and curved end walls [0, 1t), and which fits in the channel 2 of the door member, and

Fig. 2 is a de which is provided at intervals throughout its length with coiled springs'll which are secured to the backing strip 7 by staples 12, which pass through holes 13 formed in the loop shaped backing strip 7 at the meeting edges 14 thereof, and which staples embrace the diametrically extending end 15 of the coiled spring. The prongs of the staple, after being inserted through the holes at the meeting edges .of the backing strip are bent or clenched down as shown at 16, thus firmly uniting the same to the backing strip and forming a loop on the inner face of the backing strip, through which the securing end 15 of the spring 11 may be inserted. backing strip prevent the packing 4 and its facing strip 6 from forming any abrupt outwardly projecting shoulder-to interfere with the proper shutting of the door and the compression of the packing by the closing of the door. The coiled springs 11 hear at' their inner ends against the ends of the circular recesses 8 and at their outer ends The curved edge walls 10 of the against the inner fiat face of the backing 5 strip.

I claim 1. In a door packing, the combination of a member furnished with a packing channel, of a packing and flexible facing strip bridging said channel, and a sheet metal backing strip curved into loop form in cross section, and having flat outer and inner faces and curved edges uniting its flat inner and outer faces, coiled springs and staples secur ing the ends of said coiled springs to the edges of said sheet metal backing strip, substantially as specified.

2. A packing backing strip for refrigerator car doors, consisting of a strip of sheet metal bent into loop form in cross section, with flat inner and outer faces, and provided at intervals with coiled springs secured thereto by staples, substantially as specified.

3. A packing backing strip for refrigerator car doors, consisting of a strip of sheet Il'lOtllL bent into loop form in cross section,

with flat inner and-outer faces, and provided at intervals with coiled springs secured thereto by staples, the meeting edges of said loop shaped backing strip being furnished withholcs for the staples to pass through,

and the springs being provided with diametrically extending securing ends inserted passing through said holes in the meeting through the staples, substantially as speciedges of the stri and embracing the end 10 ficd. I i of the coiled sprlng, substantially as speci- 4. A backing strip for door packing, confied.

si sting in a sheet metal strip bent into. loop WILLIAM H; MINER.

shape in cross section, provided With holes Witnesses:

at its meeting edges, and furnished with a 3 PEARL ABRAMs,

coiled spring secured thereto, and a staple H. M. MUNDAY. 

